The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  1  X  X  X  X  X  X  3  3  X  1
 0  3  0  0  0  0  3  6  6  0  0  3  3  3  3  3  3  3  0  6  0  6  0  6  0  3  6  3  6  6  0  0  6  3  0  3  3  3  3  3  0  0  0  3  0  3  3  3  3  6  3  3  6  0
 0  0  3  0  0  3  6  0  6  0  3  3  6  6  0  3  0  3  3  3  3  0  0  6  6  3  3  6  0  6  0  3  3  0  6  6  0  3  0  3  6  6  6  3  0  6  0  6  6  6  3  0  0  6
 0  0  0  3  0  6  6  3  0  3  3  0  0  3  6  3  3  6  6  0  0  6  6  6  6  6  3  3  0  3  6  3  6  6  3  6  3  0  0  6  0  0  3  3  0  6  0  0  3  6  0  6  6  6
 0  0  0  0  3  6  6  6  6  6  0  6  0  0  6  6  0  3  0  0  6  6  3  6  3  6  0  6  0  0  6  6  3  0  0  0  6  0  3  6  3  6  6  3  3  6  3  6  3  3  3  0  6  0

generates a code of length 54 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 103.

Homogenous weight enumerator: w(x)=1x^0+216x^103+162x^104+144x^105+648x^107+76x^108+648x^110+270x^112+18x^132+4x^135

The gray image is a code over GF(3) with n=486, k=7 and d=309.
This code was found by Heurico 1.16 in 0.078 seconds.